“…The PGPCRij ratio, expressed as a percentage, is treated as the measure of the expected future growth rate in real income per capita in state j, i.e., as a measure of expected economic opportunity in state j. In principle, this specification parallels that in Cebula and Belton (1994), Gale and Heath (2000), and Saltz (1998).The variables SUNSHINEj and VCRIMEj are intended to reflect elements of the quality of life that have previously been found to affect migration patterns (Milligan 2000;Conway andHoutenville 1998, 2001;Gallaway and Cebula 1973;Cebula 1979Cebula , 1990Gale and Heath 2000;Renas 1978Renas , 1980and Saltz 1998). The PEj and Tj variables (U.S. Census Bureau 1994, Tables 476, 479) from the previous section have been combined here into a single variable, PETj, as suggested in the different (although somewhat parallel) analysis in Cebula (2002) of net population growth rather than net domestic in-migration.…”